(IS-95) set of standards and used especially in North America and South Korea.

CDMA2000 compares to UMTS, a competing set of 3G standards, which is developed by 3GPP and used in Europe, Japan, China, and Singapore.

The name CDMA2000 denotes a family of standards that represent the successive, evolutionary stages of the underlying technology. These are:
*Voice: CDMA2000 1xRTT, 1X Advanced
*Data: CDMA2000 1xEV-DO (Evolution-Data Optimized):

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